re PR c/90760 (ICE on attributes section and alias in set_section, at symtab.c:1573)

	PR c/90760
	* symtab.c (symtab_node::set_section): Allow being called on aliases
	as long as they aren't analyzed yet.

	* gcc.dg/pr90760.c: New test.

From-SVN: r272178

gcc/ChangeLog

+2019-06-12  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/90760
+	* symtab.c (symtab_node::set_section): Allow being called on aliases
+	as long as they aren't analyzed yet.
+
 2019-06-11  Faraz Shahbazker  <fshahbazker@wavecomp.com>
 
 	* config/mips/mips.c (mips_final_postscan_insn): Modify call

gcc/symtab.c

@@ -1583,7 +1583,7 @@ symtab_node::set_section (symtab_node *n, void *s)
 void
 symtab_node::set_section (const char *section)
 {
-  gcc_assert (!this->alias);
+  gcc_assert (!this->alias || !this->analyzed);
   call_for_symbol_and_aliases
     (symtab_node::set_section, const_cast<char *>(section), true);
 }

gcc/testsuite/ChangeLog

+2019-06-12  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c/90760
+	* gcc.dg/pr90760.c: New test.
+
 2019-06-11  Faraz Shahbazker  <fshahbazker@wavecomp.com>
 
 	* gcc.target/mips/data-sym-pool.c: Update expected output.

gcc/testsuite/gcc.dg/pr90760.c

+/* PR c/90760 */
+/* { dg-do compile } */
+/* { dg-require-named-sections "" } */
+
+void bar (void) {}
+void foo (void) __attribute__ ((alias ("bar")));	/* { dg-error "section of alias 'foo' must match section of its target" } */
+void foo (void) __attribute__ ((section ("baz")));
+void qux (void) __attribute__ ((alias ("bar"), section ("baz")));	/* { dg-error "section of alias 'qux' must match section of its target" } */